to monitor or see how someone or something is doing
誰かまたは何かがどうしているかを見る、または監視する (dareka matawa nanika ga dō shite iru ka o miru, matawa kanshi suru)
"Could you check in on the kids while I'm out?"
"私が外出中に子供たちをチェック イン オンしてくれますか？" (Watashi ga gaishutsu-chū ni kodomotachi o **check in on** shite kuremasu ka?)
to take responsibility for someone and help them learn
someone who spoils the fun of others
to improve or advance to a higher level
to decide to do something risky or difficult
to counteract or cancel the effect of something
to adjust to new circumstances or environments
